FNUS75 KBYZ 090113
FWSBYZ

SPOT FORECAST FOR RESERVOIR FIRE...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
713 PM MDT THU SEP 8 2011

FORECAST IS BASED ON REQUEST TIME OF 1837 MDT ON SEPTEMBER 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

UPPER LEVEL HIGH PRESSURE WILL BECOME CENTERED OVER THE FIRE AREA
WHICH WILL KEEP WARM AND DRY CONDITIONS IN PLACE. WINDS WILL REMAIN
LIGHT AND BE SLOPE ORIENTED WITH RIDGETOP WINDS FAVORING AN
EASTERLY FLOW. EXPECT SIMILAR CONDITIONS ON SATURDAY WITH EVEN
LIGHTER RIDGETOP WINDS. OVERNIGHT RECOVERIES SHOULD ONLY REACH 50
PERCENT THIS WEEKEND. LOOK FOR SMOKE TO NOT TRAVEL FAR FROM THE
FIRE DURING THE DAY WITH SOME SHADING POSSIBLE DUE TO THE SMOKE IN
THE AFTERNOON. THIS WEATHER PATTERN WILL SUPPORT SMOKE DRAINING
AT NIGHT THROUGH THE SHELL CANYON. SUNDAY THE ATMOSPHERE BECOMES A
BIT MORE UNSTABLE...SMOKE SHOULD MIX DEEPER AND ENCOUNTER MORE OF
A WESTERLY FLOW. BORSUM


.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....41-45.
MAX HUMIDITY........47-52 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNVALLEY 4 TO 6 MPH.
 RIDGETOP...........NORTHEAST 5 TO 10 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........EAST 5 TO 15 MPH.

.FRIDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....66-71.
MIN HUMIDITY........17-21 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......UPVALLEY 6 TO 8 MPH.
 RIDGETOP...........NORTHEAST 4 TO 8 MPH.
MIXING HEIGHT.......6900 FT AGL.
MIXING WINDS........NORTHEAST AROUND 10 MPH.

.FRIDAY NIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....44-48.
MAX HUMIDITY........42-46 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNVALLYE 3 TO 7 MPH.
 RIDGETOP...........NORTHEAST 5 TO 10 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........NORTHEAST 10 TO 20 MPH.

.SATURDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....66-71.
MIN HUMIDITY........16-20 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......UPVALLEY 4 TO 8 MPH.
 RIDGETOP...........EAST 5 TO 10 MPH.
MIXING HEIGHT.......5800 FT AGL.
MIXING WINDS........NORTHEAST 5 TO 10 MPH.

$$
FORECASTER...BORSUM
REQUESTED BY...JON WARDER
TYPE OF REQUEST...WILDFIRE
.TAG 20110908.RESER.01/BYZ